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Our investigations have focused on observations concerning the horse-chesnut’s (Aesculus hippocastanum L.) leaves in various phenophases, the state of the leaf surfaces and histo-anatomical changes of the leaves under the influence of the atmosphere pollutants (sulphur dioxide, chlorine, ammoniac, lime or cement powders). The histo-anatomical changes induced by the gaseous and solid atmosphere pollutants on the lamina have been observed in protecting tissues, assimilator tissues (the palisade and the spongy tiss...

In our paper, the investigations have focused on observations regarding the physiological and biochemical changes on the horse-chesnut’s (Aesculus hippocastanum L.) leaves during their ontogenetic cycle under the influence of the atmosphere pollutants (sulphur dioxide, chlorine, ammoniac, lime or cement powders). The foliar chlorosis and necrosis represent the clear manifestation of deep physiological modifications, as well as severe structural alterations, which affect the average content of water, dry matter, ...

We have studied 15 species of ligneous plants angyosperms, spontaneous and cultivated ones – in areas adjacent to industrial platforms: Borzeşti (Bacău county), Bicaz and Taşca (Neamţ county) - Romania; in the first case, the noxious substances are mainly gaseous (sulphur dioxide, chlorine, ammoniac), but also solid (carbon black, soot); in the other two cases, the noxious substances are mainly solid ones (lime or cement powders prone to sedimentation). Our investigations have focused on observations concern...